Its hard for me to draw males except when looking at a reference. The males I've drawn often times come out looking like females <_<. Plus, I can't think of any good clothes for guys except like fighting stuff or school uniform X_X

Its much harder to draw females than males.
coz female may have plenty variants when it comes to hair,
accessories, clothing and body curves. to make them look attractive/cute...
but when it comes to guys just do plain stuff.

Even as I am a trained artist and painter, its always been a challenge to draw males than females.

Usually it lies on the muscles and contours, males tend to show more muscles and defined contours unlike females that is more or less have smooth curves. But in terms of facial features, some people can make a male face easier than female. But as for me again, its difficult to have that masculine look unless if I already know the character of the person I am drawing, like for example, Wolverine or Gambit but if its from my imagination alone, its hard for me to draw or paint.